Market research and planning needed for niche marketplace web business.

As example of the style of website see [obscured]

please outline hours needed for these THREE sections

*general industry market research online/offline

*compeditor research online (i would like to be invloved
in the choice of compeditors, we could work on 3 compeditors)
including sales info, like average sale price, average number
of sales per week, sales commision, market share, daily traffic etc etc, not sure if you can find this out.